ACT4524 is a wide input voltage, high efficiency step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. ACT4524 has separated output current limits for dual ports CLA application. With the separated current limits, the CLA can meet Apple’s MFI standard. ACT4524 provides up to 3.5A output current at 125kHz switching frequency. ACT4524 utilizes adaptive drive technique to achieve good EMI performance while maintain 90% efficiency at full load for mini size CLA designs. ACT4524 also has built in hiccup mode output short circuit protection. The average output current is reduced to below 6mA when output is shorted to ground. Other features include output over voltage protection and thermal shutdown. ACT4524 is available in a SOP-8EP package and require very few external components for operation.